[AAASM-3074] 📝 (docs): Add org-wide baseline CLAUDE.md for LLM-assisted dev

[Chisanan232]

What changed

Adds a canonical org-wide baseline CLAUDE.md at the root of the org .github repo.

It documents the org-universal context that every per-repo .claude/CLAUDE.md should reference rather than duplicate: the product/architecture overview + repo map, shared commit/branch/PR conventions, the remote + default-branch detection rules (canonical remote is remote or origin depending on the repo; default is master except docs/inner-document which are main; org id is lowercase ai-agent-assembly), the GHA billing-block reality (validate locally), JIRA conventions (component=repo 1:1, Team Pioneer), project policy (no self-hosted; spec stays in the monorepo), and the "document the WHY, not the WHAT" documentation standard.

Why

Almost every cross-repo friction point is org-universal but non-obvious. Centralising it in one source-of-truth lets each repo's CLAUDE.md stay thin and consistent, and reduces drift as the per-repo files multiply.

Important: this is a documentation convention, not enforcement — GitHub does not auto-apply a CLAUDE.md across repos. Claude Code reads the file in the repo you're in plus your global ~/.claude/CLAUDE.md. This baseline is the link target the per-repo files point at.

Scope

• Docs-only: one new file, CLAUDE.md (103 lines). No workflow/template changes.

Part of Epic AAASM-3065 (per-repo CLAUDE.md + org baseline). Closes AAASM-3074.

🤖 Generated with Claude Code

[Chisanan232]

🤖 Claude Code — PR review

Ticket: AAASM-3074 (Epic AAASM-3065). The org-wide baseline.

• CI: none configured on this meta repo (community-health + workflow-templates) — nothing to gate.
• Scope: ✅ 1 file, CLAUDE.md, +103/-0. No changes to templates/workflows.
• Content: product/architecture + repo map, shared commit/branch/PR conventions, the remote + default-branch detection rules (canonical remote varies remote/origin; default varies master/main; org id lowercase), GHA billing-block reality, JIRA conventions, project policy, and the "document the WHY not WHAT" standard. Explicitly states this is a referenced convention, not GitHub inheritance.

Verdict: ready to approve & merge — this is the link target the per-repo .claude/CLAUDE.md files point at.